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Unread 06-19-2011, 12:00 PM   #1
HondaPeople
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Air Conditioner Recharge Recommend?

So... my AC is no longer blowing cold air. How do I re-charge it? Can I get a recharge kit and do it myself for fairly inexpensive?

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Unread 06-19-2011, 12:16 PM   #2
MJohnson92
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Yeah go to any auto parts store and you can buy a recharge kit with the plumbing for about $30. I recommend checking for HVAC codes first though to make sure it isn't just a blend door issue. A good way to check if you're low is to turn on the A/C full and open your hood. If you see the A/C pump clutch engage and disengage quickly then you're probably low on refrigerant. I recommend getting a kit with some kind of UV dye in it so you can find the leak and patch it up. Good luck!

P.S. You need R134A not R12.
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Unread 06-19-2011, 12:36 PM   #3
billzcat1
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To really do the job right, you need to pull a vacuum on the system. Plus, if your refrigerant is low, it is going somewhere and you might want someone to diagnose/repair the leak. In my case, I knew the refrigerant was released when I had the heater core repaired and that there were no leaks. But, I don't have the tools to draw vacuum, so I had a radiator shop do the job. It was $85 and came with a 90-day guarantee.
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Unread 06-19-2011, 01:07 PM   #4
Redbob
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Quote:
Originally Posted by MJohnson92 View Post
P.S. You need R134A not R12.
Fear not; there are no auto parts stores that have any R12 to sell.
Not in this country, anyway.
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Unread 06-19-2011, 01:14 PM   #5
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Quote:
Originally Posted by billzcat1 View Post
To really do the job right, you need to pull a vacuum on the system. Plus, if your refrigerant is low, it is going somewhere and you might want someone to diagnose/repair the leak....
If it took 10 years to leak down to where it just doesn't cool quickly, if you can get back to full cooling with a single can of R134a, then it's likely you don't have a very big leak.
Keep in mind the GC air-conditioning never worked very well anyway, not by comparison to, say, Ford or GM... or Nissan, or Toyota, or...

One more point: if one can makes it good, two cans won't necessarily make it better: You can overfill the system, making it even less effective than it was when new.
Look under the hood, as was suggested above: if the a/c clutch is not engaging at all, then you are very low on freon and need to go to a specialist. But if it is engaging/disengaging frequently, try adding just one can, see if you get cold air and the clutch stays engaged (on a very hot day). If so, let it go at that.
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Unread 06-19-2011, 02:05 PM   #6
billzcat1
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Quote:
Originally Posted by Redbob View Post
If it took 10 years to leak down to where it just doesn't cool quickly, if you can get back to full cooling with a single can of R134a, then it's likely you don't have a very big leak.
Or maybe, just maybe... it started leaking recently. Call me crazy, but this does occasionally happen.
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Unread 06-19-2011, 04:18 PM   #7
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I appreciate everyones input. Last summer it was working okay... gradually began getting warmer. Now no cold air at all, but I can hear the AC clutch dis/engaging quickly. So I will try one can to see if that works well. Thank you all for your input.
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Unread 06-19-2011, 06:37 PM   #8
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Your system will be toast next summer if you dont pull a vac before you blindly add refrigerant to your system.
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Unread 06-19-2011, 07:18 PM   #9
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Originally Posted by HVACNY View Post
Your system will be toast next summer if you dont pull a vac before you blindly add refrigerant to your system.
That's not necessarily true. My neighbor has a Ford E250 and has to add R134A every year to keep his A/C working. He has never pulled a vacuum on it and it's been working for years. Most recharge kits have the correct oil, stop leak, and drying chemicals to keep the system alive.
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Unread 06-19-2011, 07:49 PM   #10
HVACNY
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Quote:
Originally Posted by MJohnson92

That's not necessarily true. My neighbor has a Ford E250 and has to add R134A every year to keep his A/C working. He has never pulled a vacuum on it and it's been working for years. Most recharge kits have the correct oil, stop leak, and drying chemicals to keep the system alive.

You really believe that?And its most certainly true.Just by what your saying,i know you really have no experience dealing with A/C.You dont even know for sure whats wrong with his system,and your telling him to add refrigerant,seriously bad advice.Should he call u when his compressor blows,or have you pay his hospital bills when he injures himself.Oh wait just add refrigerant,and hope for the best.Thats great advice..Im not saying dont help the guy,but at least know what your talking about before you give someone advice.Anyone who services an A/C system without the proper guages and tools is taking a big time gamble with their system and safety.And for the record stop leak is the worst,i repeat worst thing you could possibly add to an A/C system.
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Unread 06-25-2011, 10:23 PM   #11
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Originally Posted by HVACNY View Post
Your system will be toast next summer if you dont pull a vac before you blindly add refrigerant to your system.
Are you recommending that people must always empty all of the refrigerant, pull a vacuum, then completely recharge the system when it only needs a small amount of refregerent?


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Unread 06-25-2011, 10:31 PM   #12
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Originally Posted by Redbob View Post
Fear not; there are no auto parts stores that have any R12 to sell.
Not in this country, anyway.

there are, but you have to be licensed and certified to buy it. Plus, it's uber expensive, so you may as well just to a conversion to R-134.
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Unread 06-25-2011, 10:38 PM   #13
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You will need a Scale, R134a, Vacuum Pump/ R134A gauges, R134A connectors for the Jeep, Vacuum gauge.

You must compensate for hoses also if it says 24oz which the WJ needs but each hose will take an ounce out before it even reaches the jeep. so weigh out 26ounces out of your jug.

OH there's about 1200 in equipment sitting there. Father does Commercial heating and Air so i get access to the goodies.
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Unread 06-26-2011, 10:11 AM   #14
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Originally Posted by Shadowdog500 View Post
Are you recommending that people must always empty all of the refrigerant, pull a vacuum, then completely recharge the system when it only needs a small amount of refregerent?
We don't know if it just needs a small amount of refrigerant or what. All we know is that it doesn't cool correctly. We can't diagnose his A/C from thousands of miles away. My original point several posts back was that having a professional diagnose/do the job correctly isn't very expensive.
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Unread 06-26-2011, 03:21 PM   #15
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Just adding 134a to a system that is not cooling properly, is not a good idea, These use exact charge systems, which means they require the right charge to work well, over charge is as bad as a under charge, and if your system was working well last summer chances are you have a leak and you would be wasting your money to just charge the system, because you will be in the same boat next summer again, so why knot look for the leak and solve the problelm, could be just a oring at the condensor or could be a knick in the condensor from a stone, or something else, I know you want to save some money. but it could cost you more in the end, and yes it is always better to pull a vaccum and recharge a system to keep the mositure out, that is a #1 killer of systems to the working parts, Ac system donot work with low suction pressures so moisture restristions are not a problem, but over the long haul it isnot good on the system, and Jeep ACs work just a well as the other mfgs just depends on how much you are cooling and how hot the outside temps is..
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